<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<div id="app">
			<h2>当前计数:{{counter}}</h2>
			<!-- <button @click="counter++"> + </button>
			<button @click="counter--"> - </button> -->
			
			<button @click="add"> + </button>
			<button @click="del"> - </button>
		</div>
		
	<script src="../js/vue.js"></script>	
	<script>
		const app=new Vue({
			el: '#app',
			data: {
				counter:0
			},
			methods: {
				add(){
					this.counter++;
				},
				del(){
					this.counter--;
				}
			}
		})
	</script>	
	</body>
</html>
